Danny Trejo. He came to speak at my University - he gave a great speech, and stayed a long while afterwards to meet people. Absolutely wonderful person to meet. He signed my Devil's Rejects lunchbox, and was greatly amused by it.

There are cases of people who have died from scalp lacerations (30mm+ wounds) that hemorrhage, so the person bleeds out. So if we rip off the face from scalp to chin, and do nothing to staunch the blood flow, probably wouldn't take too long, but it wouldn't be like, instant.

However, in the Middle Ages flaying torture would often start with the face. Most people were dead by the time the flayer reached the waist. That makes the part where his torso and arms are stripped a bit unrealistic. Think of it like a really bad burn - without medical treatment, they're losing fluids and are open to the elements with no dermal protection.